How do you write 6.73 in scientific notation?

Which expression is equivalent to 4 square root 6 divided by 3 root 2

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6